163468661 has 2 divisors, whose sum is σ = 163468662. Its totient is φ = 163468660.

The previous prime is 163468639. The next prime is 163468693. The reversal of 163468661 is 166864361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132388036 + 31080625 = 11506^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 163468661 - 2¹⁰ = 163467637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163468561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81734330 + 81734331.

It is an arithmetic number, because the mean of its divisors is an integer number (81734331).

Almost surely, 2^163468661 is an apocalyptic number.

It is an amenable number.

163468661 is a deficient number, since it is larger than the sum of its proper divisors (1).

163468661 is an equidigital number, since it uses as much as digits as its factorization.

163468661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 163468661 is about 12785.4863419426. The cubic root of 163468661 is about 546.7785912924.

The spelling of 163468661 in words is "one hundred sixty-three million, four hundred sixty-eight thousand, six hundred sixty-one".